CHANGE THE GRINDING WHEELS
WARNING!
Use only grinding wheels rated for the machine’s no-load speed (3550 RPM) or higher, which have a
1/2 in. arbor hole or a hole bushed to 1/2 in. Never use a grinding wheel rated for lower RPMs. Do not attempt to
machine an undersized wheel to fit the arbor.
1. Undo the nuts and remove the three bolts (H) holding the protective side cover (J) to the wheel guard (G).
2. Remove the side cover.
3. Place a wedge between the wheel and the tool rest to prevent the shaft from turning.
4. To remove the left side wheel (when facing the front of the bench grinder), turn the arbor nut clockwise to loosen
it. When replacing the wheel, turn it counterclockwise to tighten.
5. On the right hand wheel, turn the nut counterclockwise to loosen and clockwise to tighten it.
NOTE:
Many grinding wheel manufacturers use removable arbor bushings to allow the same wheel to adapt to
different machine arbor diameters. Save these bushings for future use if not needed to install this new replacement
wheel.
6. Remove the arbor nut, outer flange (I) and the old wheel.
7. Inspect the replacement wheel for shipping damage, cracking or chipping.
8. Install the replacement wheel. Make sure the wheel is a snug fit (not loose) on the shaft.
9. Replace outer flange on the shaft.
10. Replace the arbor nut and tighten.
WARNING!
Do not over-tighten wheel nuts when installing grinding wheels. The wheel could crack and fly apart in
use later. Tighten the wheel nut only enough to drive the wheel without slippage.
11. Replace the side cover.
12. Re-insert the three bolts and tighten the nuts.
13. For each wheel you replace, re-adjust the tool rest, spark guard, and eye shield.
14. Rotate the wheel by hand to ensure its free movement and to check proper adjustments of the tool rest and
spark guard.
OPERATION
IMPORTANT:
Before each use of the bench grinder, inspect its general condition. Check for:
•
loose
screws
•
damaged
electrical
wiring
•
cracked, chipped, or damaged wheels
•
misalignment or binding of the moving parts
•
If bench or pedestal mounted, check that all fasteners are in place and tight.
CAUTION:
Keep your bench grinder clean by removing dust from working parts, from the lower portion of the wheel
guard assembly, and from the work area around it.
The ON/OFF Switch is located on the front of the grinder.
To turn the grinder on, push in the right hand portion of the switch marked with the white dot.
To turn the grinder off, push the left hand portion of the switch in.
